oli.patane@LIGO.ORG - posted 07:37, Wednesday 27 May 2026 - last comment - 10:02, Wednesday 27 May 2026(90349)
Ops DAY Shift Start
TITLE: 05/27 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
SEI_ENV state: MAINTENANCE
Wind: 8mph Gusts, 5mph 3min avg
Primary useism: 0.06 μm/s
Secondary useism: 0.23 μm/s
QUICK SUMMARY:
The LVEA is LASER SAFE
Ryan C, Oli
Temps have been going up in the LVEA due to the HAM4 and HAM6 RGA high temp bakeout that is currently happening (WP13214). Zone 4 (output arm) is by far the most affected, but it looks like the temps there are leveling off just above 70 F and holding their own against the bakeout temperatures.
Also - Late alog: Yesterday we flipped on the HAM567 Mega cleanroom fans to get the room cleaned up in prep for opening HAM7. This likley is raising the temp in that zone. Sheila is aware that this may effect suspensions.